10821261 has 8 divisors (see below), whose sum is σ = 15740064. Its totient is φ = 6558320.

The previous prime is 10821259. The next prime is 10821271. The reversal of 10821261 is 16212801.

10821261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10821261 - 2¹ = 10821259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10821221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163926 + ... + 163991.

It is an arithmetic number, because the mean of its divisors is an integer number (1967508).

Almost surely, 2^10821261 is an apocalyptic number.

10821261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10821261 is a deficient number, since it is larger than the sum of its proper divisors (4918803).

10821261 is a wasteful number, since it uses less digits than its factorization.

10821261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327931.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 10821261 is about 3289.5685127384. The cubic root of 10821261 is about 221.1868433479.

The spelling of 10821261 in words is "ten million, eight hundred twenty-one thousand, two hundred sixty-one".